The explorer is running in 'regtest' mode. This saves disk space, but there is limited data.
The code for this application can be found at github.com/pdxrod/blockchain_explorer.

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Enter a block height, e.g. 123, or the start of a bitcoin address, e.g. mxMfLjAez

Height: 293
Hash: 15f6642f0ad35ac00c8e49712a23b472254e2cd9968435e1d12fcd1711da8b07
Previous block: 305e7f087394541424b3b9400f7884d4fd844887f2ead8d202bd82fa23b47331
Next block: 3a8b490ef9dcb381a1b2d4fd67bad3e020a3ec694cc26519cd0c33bd0caf3f17
Weight: 872
Versionhex: 30000003
Version: 805306371
Transactions:
Time: 1701597916
Stripped size: 218
Size: 218
Nonce: 4
Merkle root: ade3482b91c097d25228f7ed8cc7a9beceb29b5b15864e7e0507ecaf7c248f0e
Median time: 1701597915
Difficulty: 4.656542373906925e-10
Confirmations: 1951
Chainwork: 000000000000000000000000000000000000000000000000000000000000024c
Bits: 207fffff